473104134b
We need to know the base address of the kdump kernel even when we're not a kdump kernel, so add a #define for it. Move the logic that sets the kdump kernelbase into kdump.h instead of page.h. Rename kdump_setup() to setup_kdump_trampoline() to make it clearer what it's doing, and add an empty definition for the !CRASH_DUMP case to avoid a Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
38 lines
959 B
C
38 lines
959 B
C
#ifndef _PPC64_KDUMP_H
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#define _PPC64_KDUMP_H
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/* Kdump kernel runs at 32 MB, change at your peril. */
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#define KDUMP_KERNELBASE 0x2000000
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/* How many bytes to reserve at zero for kdump. The reserve limit should
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* be greater or equal to the trampoline's end address.
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* Reserve to the end of the FWNMI area, see head_64.S */
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#define KDUMP_RESERVE_LIMIT 0x8000
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#ifdef CONFIG_CRASH_DUMP
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#define PHYSICAL_START KDUMP_KERNELBASE
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#define KDUMP_TRAMPOLINE_START 0x0100
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#define KDUMP_TRAMPOLINE_END 0x3000
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#else /* !CONFIG_CRASH_DUMP */
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#define PHYSICAL_START 0x0
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#endif /* CONFIG_CRASH_DUMP */
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#ifndef __ASSEMBLY__
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#ifdef CONFIG_CRASH_DUMP
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extern void reserve_kdump_trampoline(void);
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extern void setup_kdump_trampoline(void);
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#else /* !CONFIG_CRASH_DUMP */
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static inline void reserve_kdump_trampoline(void) { ; }
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static inline void setup_kdump_trampoline(void) { ; }
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#endif /* CONFIG_CRASH_DUMP */
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#endif /* __ASSEMBLY__ */
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#endif /* __PPC64_KDUMP_H */
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